{
  "url": "https://openlegislation.uk/road-vehicles-construction-and-use-regulations-1986/schedule-7B/paragraph-7",
  "json_url": "https://openlegislation.uk/road-vehicles-construction-and-use-regulations-1986/schedule-7B/paragraph-7.json",
  "legislation": "uksi/1986/1078",
  "legislation_title": "The Road Vehicles (Construction and Use) Regulations 1986",
  "legislation_url": "https://openlegislation.uk/road-vehicles-construction-and-use-regulations-1986",
  "path": "schedule/7B/paragraph/7",
  "kind": "paragraph",
  "number": "7",
  "heading": null,
  "text": "In this Part of this Schedule—\n(a) a reference to the lambda value, in relation to a vehicle at any particular time, is a reference to the ratio by mass of air to petrol vapour in the mixture entering the combustion chambers divided by 14.7; and\n(b) “the emissions publication” is the publication entitled “In Service Exhaust Emission Standards for Road Vehicles – Nineteenth edition” (ISBN 978-1-84864-176-1) published by the Department for Transport.",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Sch. 7B inserted (25.9.1995) by The Road Vehicles (Construction and Use) (Amendment) (No. 5) Regulations 1995 (S.I. 1995/2210), regs. 1(2), 4, Sch. 2"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Sch. 7B para. 7(b) substituted (1.2.2018) by The Road Vehicles (Construction and Use) (Amendment etc.) (No. 2) Regulations 2017 (S.I. 2017/1251), regs. 1, 2(2)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1986/1078/schedule/7B/paragraph/7",
    "retrieved_at": "2026-10-29T16:46:09.046037+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}